Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Pressure Probes"”.
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Measurement Drift in 3-Hole Yaw Pressure Probes From 5 Micron Sand Fouling at 1050° C
3-hole pressure probes are capable of accurately measuring flow angles in the yaw plane. These probes can be utilized inside a jet engine hot section for diagnostics and flow characterization. Sand and other particulate pose a significant risk to hot section components and measurement devices in …
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Water permeability of plant cells measured by pressure probes: effects of light and turgor, and the role of unstirred layers
… single cells, during measurements with the cell pressure probe (CPP) and (ii) on the use of the latter technique to investigate changes in water permeability of leaf cells in response to light. Internodes of the giant green alga Chara corallina and parenchyma cells of corn leaves were used in the …
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An experimental method for measuring dynamic pressures above a cavitating propeller
… experiment and apparatus for measuring dynamic pressures above a cavitating propeller which could be used in modeling the differences between types of cavitation. A large, aluminum plate was designed to hold the pressure probes above the chosen 5 bladed surface ship propeller in an 5 x 5 array. …
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High Pressure Nuclear Magnetic Resonance Studies of Homogeneous Catalysts
… from $-40\sp\circ$C to $100\sp\circ$C and pressures up to 4000 psi is described. Its significant features are a built-in stirring mechanism to mix the sample under study with reactive gases, and resolution and sensitivity comparable to that obtained in ambient-pressure probes without sample …
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The effects of turbulence on the measurements of five-hole probes
… of turbulence on the measurements of five-hole pressure probes (5HP) and to develop a model capable of predicting the response of a 5HP to turbulence. The five-hole pressure probe is a commonly used device in experimental fluid dynamics and aerodynamics. By measuring the pressure at the five …
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Investigation of the Effects of an Upstream Cavity on the Secondary Flow in Transonic Turbine Blade Passages with Endwall Contouring
… understanding of secondary flows in modern high-pressure (HP) turbine blade passages. More specifically, it aims to improve the understanding of vortical structures near the endwall with respect to the presence of an upstream cavity that approximates the gap present in actual engines between the …
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Aerodynamic performance measurements in a counter-rotating aspirated compressor
… temperature as well as the total and the static pressures at the inlet and the outlet of the compressor are measured. Due to the short test time ([approx.]100 ms) and unsteady nature of the blow-down environment, performance measurements in a short-duration test facility place especially …
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An Experimental Study of Compressible Turbulent Reattaching Free Shear Layers
… was made utilizing a Schlieren system, static pressure probes, and a two-component coincident laser Doppler velocimeter. The expansion of the flow at the step produced stronger anisotropy and much higher turbulence level and shear stress. The compressibility effects and/or mean density change …
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Investigations of Injectors for Scramjet Engines
… helium concentration. Pitot and cone-static pressure probes and a diffuser thermocouple probe were employed to document the flow. The main results of this work was that the mixing efficiency value of this aeroramp design which was optimized at Mach 2.4 for hydrocarbon fuel was only slightly …
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Study of a naturally oscillating triangular-jet flow.
… flow. Surface-flow visualisation and surface-pressure measurements in the SDTJ nozzle have provided the location of critical points and bifurcation lines on the chamber wall, and from this the topology of the SDTJ flow is deduced. Some details of the flow such as a jet-reattachment node near …